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Keywords
(8)
Cross Section
Ir Spectra
Optical Absorption
Optical Properties
Transition Probability
X Ray Diffraction
Zinc
Rare Earth
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Structural, absorption and fluorescence spectral analysis of Pr 3+ ions doped zinc bismuth borate glasses
Structural, absorption and fluorescence spectral analysis of Pr 3+ ions doped zinc bismuth borate glasses,10.1016/j.jallcom.2011.04.114,Journal of All
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Structural, absorption and fluorescence spectral analysis of Pr 3+ ions doped zinc bismuth borate glasses
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Inder Pal
,
Ashish Agarwal
,
Sujata Sanghi
,
M. P. Aggarwal
Glasses having composition 20ZnO·xBi2O3·(79.5−x)B2O3·0.5Pr6O11 were prepared by melt quench technique. The amorphous nature of the prepared glass samples was confirmed by X-ray diffraction. The spectroscopic properties of these glasses were investigated by recording
optical absorption
and fluorescence spectra. The structural investigations of the glasses were carried out by recording the IR spectra. The
optical properties
of Pr3+ ions doped
zinc
borate glasses with varying concentration of bismuth oxide have been studied. The Judd–Ofelt intensity parameters Ωλ (λ=2, 4, 6) and other radiative properties like radiative transition probability, radiative life time, branching ratio and stimulated emission cross-section of the prepared glasses have been calculated. The variation of Ω2 with Bi2O3 content has been attributed to changes in the asymmetry of the ligand field at the
rare earth
ion site and to the changes in their
rare earth
oxygen (RE-O) covalency. The branching ratio for 3P0→3F2 transition is 42% and the predicted spontaneous radiative
transition probability
rates are fairly high (14,347–14,607s−1). This is beneficial for lasing emission. The stimulated emission cross-section for all the emission bands has been calculated.
Journal:
Journal of Alloys and Compounds - J ALLOYS COMPOUNDS
, vol. 509, no. 28, pp. 7625-7631, 2011
DOI:
10.1016/j.jallcom.2011.04.114
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